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FUNCTION head & neck muscles
ch 8 page 99
18
Anatomy
Undergraduate 4
10/08/2017

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Term
temporalis m.
Definition
elevates and retracts mandible
Term
masseter m.
Definition
elevates mandible
Term
orbicularis oculi m.
Definition
closes an eyelid
Term
orbicularis oris m.
Definition
closes, purses, and protrudes the lips
Term
zygomaticus major m.
Definition
smiling
Term
levator anguli oris m.
Definition
elevates corner of mouth
Term
lavator labii superiors m.
Definition
elevates upper lip
Term
depressor anguli oris m.
Definition
depresses corner of the mouth
Term
depressor labii inferioris m.
Definition
depresses lower lip
Term
buccinator m.
Definition
flattens a cheek agains teeth as in sucking & whistling
Term
sternocleidomastoid m.
Definition
contraction of both sternocleidomastoids flexes the neck contraction of one sternocleidomastoid rotates the head to the opposite side and laterally tilts the had to the same side
Term
digastric m.
Definition
depresses mandible & elevates hyoid
Term
sternohyoid m.
Definition
depresses the hyoid and larynx
Term
omohyoid m.
Definition
depresses the hyoid
Term
sternothyroid m.
Definition
depresses the larynx and hyoid
Term
thyrohyoid m.
Definition
depresses the hyoid and raises the larynx
Term
trapezius m.
Definition
extends the head
Term
contraction of the left sternocleidomastoid muscle moves the face to the right or the left?
Definition
right
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